Portenta H7 BLE and threading

Official Hardware Portenta Family Portenta H7
1

I am trying to write a code for my Portenta H7 that makes use of threading and the BLE component. The code is given below:

#include "Arduino.h"
#include "RPC.h"

//using namespace rtos;

rtos::Thread t1;
rtos::Thread t2;

String color;

BLEService ledService("19b10000-e8f2-537e-4f6c-d104768a1214");
BLEStringCharacteristic stringCharacteristic("19b10001-e8f2-537e-4f6c-d104768a1214", BLERead | BLEWrite, 20);


//LED Blink Functions---------------------------------------------------------------------------
void call_blue_led() {
    digitalWrite(LEDB, LOW);

    delay(500);
    digitalWrite(LEDB, HIGH);

    delay(500);
}

void call_red_led() {
    digitalWrite(LEDR, LOW);

    delay(500);
    digitalWrite(LEDR, HIGH);

    delay(500);
}

void call_green_led() {
  
    digitalWrite(LEDG, LOW);

    delay(500);
    digitalWrite(LEDG, HIGH);

    delay(500);
  
}
//----------------------------------------------------------------------------------------------


void setup() {


  Serial.begin(9600);


  pinMode(LEDR, OUTPUT);
  pinMode(LEDG, OUTPUT);
  pinMode(LEDB, OUTPUT);

    if (!BLE.begin()) {
    Serial.println("Starting Bluetooth® Low Energy failed!");
    while (1);
  }

  BLE.setLocalName("LED-Controller");
  BLE.setAdvertisedService(ledService);

  ledService.addCharacteristic(stringCharacteristic);
  BLE.addService(ledService);

  stringCharacteristic.writeValue("Hello");

  BLE.advertise();
  Serial.println("BLE LED Control ready");

  #ifdef CORE_CM7
    bootM4();
  //  t1.start(call_red_led);
  #endif
  /*
  #ifdef CORE_CM4
    t2.start(call_green_led);
  #endif
  */
}






void loop() {

  if (central) {
    Serial.print("Connected to central: ");
    Serial.println(central.address());

    while (central.connected()) {
      if (stringCharacteristic.written()) {
        color = stringCharacteristic.value();
        Serial.println(color);
        handleColorString(color);
      }
    }

    Serial.print("Disconnected from central: ");
    Serial.println(central.address());
  }

  if (color == "red") {

t1.start(call_red_led);

  } else if (color == "green") {

t1.start(call_green_led);

  } else if (color == "blue") {

t1.start(call_blue_led);


  } else if (color == "off") {
   digitalWrite(rLED, HIGH); // turn the LED off 
   digitalWrite(gLED, HIGH); // turn the LED off 
   digitalWrite(bLED, HIGH); // turn the LED off 



  } else {
    Serial.println("Unknown color command received!");
  }


}

when i try to complile the following lines give me an error:
"
BLEService ledService("19b10000-e8f2-537e-4f6c-d104768a1214");

BLEStringCharacteristic stringCharacteristic("19b10001-e8f2-537e-4f6c-d104768a1214", BLERead | BLEWrite, 20);
"

the error is:
"
Compilation error: 'BLEService' does not name a type
"

How do i resolve this issue

2

Hi @shiventhedestroyer

It seems that your code is missing the ArduinoBLE library and the declaration of certain variables.
Please take a look at the following tutorial: BLE Connectivity on Portenta H7.

Best,